Now it appears Nader may be rethinking his willingness to be a "domestic draft and stash" and sign directly with the Maine Red Claws. Via the Boston Globe's Adam Himmelsbach, Nader's agent, Cervando Tejada, said the following:

He's an NBA player, that's my belief. Right now, we have to decide what the next move is.

Boston gave Abdel an opportunity by drafting him, and it was a big opportunity. They gave him a chance and have done good by him. It's not that Abdel is averse to going to the D-League. It's just tough because he had such a good summer.

Why is this an issue for the Celtics? Himmelsbach writes:

To retain a second-round pick’s rights, teams must extend a required tender by Sept. 10. That is typically a one-year, nonguaranteed contract offer for the rookie minimum salary. Many teams have good-faith agreements with second-round picks that the player will not accept the tender, because if it is accepted, it can force a team’s hand a bit.

The assumption (or verbal agreement, as Himmelsbach says several league sources reported) was that Nader would reject the tender and sign with Maine instead, allowing Boston to keep his draft rights.

Basically, there are three possibilities on the table:

1. The C's could decide not offer Nader a contract, allowing him to become a free agent.

2. He could reject the contract and take a D-League deal instead, as originally expected.

Boston can only maintain Nader's draft rights if he rejects the tender or lands on the 15-man roster.

From Nader's point of view, it's in his best interest to accept it since his worst-case scenario would still be the D-League. However, chances are the Celtics wouldn't have selected Nader in the first place without his promise to reject the tender. The C's were well aware of their roster crunch and overabundance of draft picks and would've simply moved on to the next player on their list who was willing to be stashed.